2xy-[xy+2(xy-xy)]+y 其中x=2x+1 y=2011/2012 怎么写 先化简,在求值
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![2xy-[xy+2(xy-xy)]+y 其中x=2x+1 y=2011/2012 怎么写 先化简,在求值](/uploads/image/z/5181642-18-2.jpg?t=2xy%EF%BC%8D%5Bxy%2B2%EF%BC%88xy%EF%BC%8Dxy%EF%BC%89%5D%2By+%E5%85%B6%E4%B8%ADx%3D2x%2B1+y%3D2011%2F2012+%E6%80%8E%E4%B9%88%E5%86%99+%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%9C%A8%E6%B1%82%E5%80%BC)
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2xy-[xy+2(xy-xy)]+y 其中x=2x+1 y=2011/2012 怎么写 先化简,在求值
2xy-[xy+2(xy-xy)]+y 其中x=2x+1 y=2011/2012 怎么写 先化简,在求值
2xy-[xy+2(xy-xy)]+y 其中x=2x+1 y=2011/2012 怎么写 先化简,在求值
xy-3xy+2xy-xy
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
(-3xy+2xy)-(4xy+xy)
3(xy-xy)-2(xy+xy)+3xy
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
计算:3xy(x²y-xy²+xy)-xy²(2x-xy+2x)
2xy-[xy+2(xy-xy)]+y 其中x=2x+1 y=2011/2012 怎么写 先化简,在求值
2x²y-3(2xy-xy)-xy
xy^2-2xy+2y-4
xy^2-2xy+2y-4
x^2-xy/xy-y^2约分
(2xy-y)-2xy化简
xy'+y=-xy^2的通解
xy
已知 (x+1)² +|y-1|=0,求 2(xy-xy²)-(3xy²-xy) 的值.
3xy-4xy-(-2xy)求过程
1.3xy -4xy-(2xy)